Apparatus for locating shank stiffeners in shoe soles



Nov. 8,119.27: 'f 1,647,979

R. E. BARTELS APPARATUS FOR-LOCATING SHANK STIFFENERS I S'HOE SOLES Filed April 26| 1920 Patented Nov. 8, 1927.

UNITED STA-Tes;

REINHARD n.Y marras, or LYNN, MAssAcHUs/E'rte,

reame PATENT ort-fion.

Application iiledpril 26, 1920. 4Serial No. 376,633.

In attaching rigid shank stifeners to shoe soles', the forward endt of the shank still'ener -should be located a short distance back of or pbelow the break line in order that the resiliency of the shoe at the break line may and( for this reason rit is difficult to judge when locating the stifener, where the break ,line will been the sole lwhen the shoe is coindll plated. Consequently, many soleshavebeen spoiled by the location ofthe shank stitt'ener 1 too far forward. ortoo` far back relative to the break line, in the first instance, destroying'the resiliency of the sole at the break line, and in the second, throwingy off the tread of the heel, either of which fault is undesirable from the standpoint of goed workmanship, if" not fatal' to the usefulness of the slice. y

One object of my invention is to overcome these difficulties producing a gaging apparatus, whereby the workman `can quickly and accurately locate the shank stiffener on a sole of argiven style andv size.

Another object of my invention is to, providemeans whereby when the desiredpoint, for the end, ofthe shank stitener, on a sole of one size of a certain style has been located, the corresponding point for any other, size of that same style may be readily located.

A still further object is to produce mechanical means whereby the desired point in any given sole may be readily and; accurately located'. A v

A specific embodiment of my invention, by which the above objects may be accomplished, is illustrated on the accompanying drawings, in whichs Figure l is a plan view of my shank stiii'- ener locatingapparatus, with a sole shown thereon in dotted lines.

FigureA 2 is` a side elevation of the same.

Figure 3 is a transverse section on line 33 u'of Figure l, showing the dovetailed connection of the slide with the plate.

Figure 4 is a longitudinal section on line fof-` Figure 1 showing certain details of the device.

Figure `5' is a view showing a shoe sole with a shank stiiiener located on the shank thereof.

llifgure 6 is a viewshowing a shankstfutd ener in perspective,

My apparatus may be used to loca-te desired point on the sole of' a shoe, but the particular use for which it is designed is to locate a. point on the shank of a sole of giveny style and size at which the forward end of? a shank stiii'ener,4 to be attached thereto, should terminate. In actual practice, this point is'located on the sole, about one-fourth of an inch back ofI the break line, indicated' atf29, Figure 5'. y

The accurate locationofthis `point bymef chanical means is made possible byl thereot that the forepart 30 of the sole, i. e., from the toe to the break line, var-ies in lengthby approximately one-sixth of'V an inch for-leach change of ful-l size of' the shoe, regardless of style.` Therefore, if a point is selected on the sole of a shoe of any known style and'si'ze,

called for convenience the selected so l`es and it is desired to locate the corresponding point on a sole of a different size of the same style, called for conveniencethe problem sole, one proceeds as follows: First, the distance Yfrom the toe to the break line is measured on the selected sole, and'Y then-the distance from the break lineto the point selected is added to or subtracted' from this distance, according as the point lies behind or in front of the breakline.' Then one-sixth of an inch for each unit of' size number by whifcli the problem solel is greaterthan, or less than the size of `the selected sole, is added to or subtracted from the distance found above, as the case may be. This new distance will be the distance measured rearwardly from the toe at which the required point lies on the problem sole. 'As has been stated above, the object of my invention is to find such point on the sole, byy mechanical means, and the mechanism by which it is accomplished will nowbe described in detail, referring tothe accom.- panying drawings by reference numerals. After describing the details of the device, I will set forth the manner of its' use in actual practice. Y

My invention as shown inthe specific ,embodiment illustrated, comprises a plate 1 0. The rear end of the plateis recessed to receive a steel plate 125," which is fastened in place by means of screws 13,01 other suitable securing means. o

Located ulpon the upperface of thel plate 10 are score ines 14 and 15, which liediagona ally across the face thereof, and cross; a

lil)

pointl' on the longitudinal?central' lineof i the plate. These lines are located toward the means of the lever arm 27 extending thererear end of the plate, and at any suitable distance from the rear of the size scale, to be described. The angle at which lines 14 and 15 lie to each other may vary, but the adjacent angles which these lines make with the longitudinal line of the plate which passes through the point 16, must be equal. The purposek of these lines and of their position on the plate will appear later.

Slidably arranged on the forward end of the plate 10 is a gage or locating plate 17, the side edges 19 of which are beveled outwardly to fit slidably in the complemental undercut inner edge of -guideways 2O andl 21. These guideways may be formed vintegral with the plate 10, or, as shown, maybe attached thereto b means of screws and extend from thev orward end thereof, rearwardly along the edges for about half the length of the plate. The slide 17 is provided with a reentrant curved recess 1S in the edge thereof toward the rear of the plate 10. This recess may be of such contour and size as to receive the toe of a sole of practically any style or size which may be placed on the plate.

The guide member 2O may have a scale 22 cut on one of the side edges thereof, correspending to the sizes of a shoe, say, from 1 toV 16 inclusive, and the eomplemental locating plate has a similar scale 23 on its inner edge adjacent/to the graded side edge of the location plate. The graduations of the scale on the guide member are so spaced that each full gra'dation is equal to the difference of length between the sole of one size of shoe and the next larger size, measured from the tip to the desired point, as stated above, onesixth of an inch. Half grades, or half sizes, or any other fractional sizes may be indicated on this scale. The gradations of the scale 23 on the locating plate are arbitrary, and there may be as many to the inch as is found convenient; the only requisite is that they be sufficient in number, so that one of the gradations on the slide may come approximately opposite a gradation on the guide member, corresponding to the size of the shoe sole when a key number on the slide is being found. The scale which indicates size may be called the size scale, and the full grades thereof, size numbers or size grades. Located on the guide member 21 is a clamping member adapted to clamp the locating plate 17 in adjusted position. This clamping member comprises a check nut 24 resting on the guide members 21, and a bolt 25 passing through the center thereof and screw-threaded into the guide member 21 and plate 10. rIhis bolt is provided with a head 26 adapted to bear on the upper surface of the check nut to cause it to clamp the slide in position. The head of the bolt may be turned to and from clamping position by from.

A circular steel plug 28 is preferably counter-sunk into plate 10 at about the point 16 at which lines 14. and 16 cross as a center. The shape of this member 1s immaterial. however, and the purpose of the plug 2S, and of the steel plate 12, are to present hard, durable surfaces beneath the sole placed on the plate at the points at which the tines which secure the shank support to the sole, pierce the leather and clinch. Wear on the plates at these points which would otherwise occur in the relatively soft metal of plate 10, is thereby prevented. These steel members are not, however, essential parts of the invention, and may be dispensed with altogether. The plate 12 and the plug 28 may be made of tool steel, and may be referred to as wear plates.

The particular gradation of the locating plate 17, which comes opposite a gradation on the guide member for any given size, varies with the style of the shoe. In order to find this gradation for a given style, I first select a last of a known size of the style in question, and measure the length of the fore part of the last, i. e., from the toe to the break line, and add to this, one-eighth to onequarter of an inch for the overhang of the sole, that is, kthe distance that the sole extends beyond the last after the upper is pulled over the last; and one-quarter of an inch for the distance back of the break line at which the forward end of the shank stiffener is preferably to be located. then mark off this distance forwardly along the plate 10 from the point 1G where the lines 14 and 15 cross and set the location plate so that the apex of the reentrant curve or recess is located atthe forward en'd of the measured line, and clamp the locating plate in this position. The gradation on the loeating'plate which falls opposite the size number on the guideway 20, corresponding to the size number of the last selected, is marked as at X to form the reference line, and is taken to be the key number for the given style.

Inasmuch as the sizes of all styles varyby a fixed distance, as above indicated, t-he position of the location plate for'any other size of the given style is determined by merely bringing opposite the key number X, as found above, the `gradation indicatingr that size on the size scale 22. The scale 23 on which the key number is located, may be known as the style scale, and the gradation thereon as style numbers, and may receive arbitrary symbols for the different styles. However, the style scale may be dispensed with altogether, and a mark made to indicate a key number for any given style when its location is determined by the above method. Or, for convenience, where a manufacturer Works on only a limited number of styles, the key number for each style may be found and permanentlyindicated on the locating plate as such.

To find the desired point at which the forward end of the shank` stiffener is to be placed on a given size and style, all that is necessary is to brin@V the proper size number opposite the key number, as determined above, for that style, to place the sole on the plate with the toe touching the slide at the apex of the recess, and the desired point at which the forward end of the shank stitliener is to be located on the sole will then lie at the intersection 16 of lines 14 and 15, whereupon, the operator may place the shank stiifn ener in place, judging sufliciently accurately with his eye, the location of the shank stiffener, by observing the position of line 11i or 15, according as the sole is for a left or right shoe, and may secure the shank stifener in place thereon without further measurement. The shank sti'ener is laid to register with the median line of the heel end of the sole.

This application contains claims specific to the construction herein illustrated and described and generic to these rand other constructions such as are specifically disclosed and claimed in my United States Patents Nos. 1,493,950, granted May 13, 1924; and

1,565,702 and 1,565,774, both granted December 15, 1925, the subject matters of which were divided out from this application. The term shoe soles is intended to include shank pieces as well, and various changes and modifications may be madeI therein Without departing from the spirit of the invention as set forth in the statement of invention and the claims hereto appended I claim:

1. In a device for locatingr a desired point on a sole for a shoe of any given size and style, a plate having indicated ythereon a firedpoint, a locating plate slidable on said plate, and guideways in which said locating plate slides, one of said guideways having a scale comprising gradations spaced apart a distance equal to the difference of the length of soles due to unit increase in the size thereot, said plate having diagonal lines crossing at the fixed point.

2 A. device of the class described comprising a plate for supporting a shoe part and having means to define the location of a shank stiftener, and a gage adjustable on said plate and engageable with one end of the shoe part said gage having a scale thereon shoe sole at a predetermined distance from the break line may be found for any size of a given style of shoe, which comprises a plate upon which the sole may be placed, said plate having a marked fixed point, guide members on said plate, and a. slide member adapted to slide between said guide members, said plate having a scale, the grad; ations of which are spaced apart a distance equal to the unit difference in length of the forepart of a shoe sole for each unit increase in the size of the soles and with which said slide member may be brought into determined relation. I

4t. A device of the class described comprising a plate for supporting a shoe sole and having means to define the location of a shank stili-ener relative to said plate, and a gage adjustable on said plate and engageable with 'i one end of the sole, said gage having a scale thereon corresponding to diiilerent sizes of soles, there being a series of fixed reference lines each corresponding to a certain style of shoe, said scale and lines being adapted to cooperate to correctly locate said gage on said plate whereby the proper position of the stiliener is indicated by said defining means for the size and style indicated when the sole is placed in position against said gage.

5.v A device of the class described comprising a plate for supporting a shoe sole, means for defining the location of a shank stitlener carried thereby, members forming a guideway on said plate, a gage slidable in said guideway, there being a scale on said gage and a series ofreference lines on said guideway, said scale and said series of lines being adapted to cooperate so that when a sole is placed on said plate wth its end in Contact with said gage, the scale number and line indicating, respectively', the size and style of said sole coinciding, said defining means correct-ly indicates the position of said shank stiflener for said sole. f

In testimony whereof I have afliXed my signature.

REINHARD E. BARTELS. 

